The HBX is T.R.U. Ball's brass hinge, offered in three and four finger versions in medium and large. Brass gives it noticeable weight compared with aluminum hinges, and shooters who like a heavy hand while aiming settle on it quickly. The speed dial sear system adjusts in small clicks, so hot or slow rotation can be set without swapping parts, and the finger pieces sit in a stepped layout that spreads the load across the hand.
Bought mainly by target archers shooting indoor rounds and field courses where a hinge rewards a steady pull. Hunters will find no wrist strap and no safety, which rules it out for most stands. Buying one online usually means the dealer and used listings on eBay, since T.R.U. Ball sells largely through pro shops, and sizing needs a hand measurement before ordering.
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